Improve script display in the observatory.

runtime/bin/vmservice/client/lib/src/elements/observatory_element.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library observatory_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/app.dart';
 import 'package:polymer/polymer.dart';
 
 /// Base class for all Observatory custom elements.
 @CustomTag('observatory-element')
 class ObservatoryElement extends PolymerElement {
   ObservatoryElement.created() : super.created();
 
   ObservatoryApplication get app => ObservatoryApplication.app;
+  Page get page => app.currentPage;
+  ObservableMap get args => page.args;
 
   @override
   void attached() {
     super.attached();
     _startPoll();
   }
 
   @override
   void attributeChanged(String name, var oldValue, var newValue) {
     super.attributeChanged(name, oldValue, newValue);
@@ skipping 73 matching lines @@
 
 
   String formatSize(int bytes) => Utils.formatSize(bytes);
 
   String fileAndLine(Map frame) {
     var file = frame['script']['user_name'];
     var shortFile = file.substring(file.lastIndexOf('/') + 1);
     return "${shortFile}:${frame['line']}";
   }
 
+  int parseInt(String value) => int.parse(value);
+
   bool isNull(String type) {
     return type == 'Null';
   }
 
   bool isError(String type) {
     return type == 'Error';
   }
 
   bool isInt(String type) {
     return (type == 'Smi' ||
@@ skipping 34 matching lines @@
               'Bool',
               'String',
               'Double',
               'Instance',
               'GrowableObjectArray',
               'Array',
               'Type',
               'Error'].contains(type));
   }
 }